May be your mobile version is too low? You can try to delete some not important files, to eradicate, and if you want clear some file, I've been use betanews reports of this new product AirCover Security, you don't need a high price, just need $11.99, and can get a advanced products which can protect your mobile phone, regarded as the best alternative to Avast! At the same time, I suggest you upgrade your mobile phone version to 4.1 , it would be better to use!
